Watch strap



FIG. 1 is a perspective view of "watch strap";

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end view thereof; and,

FIG. 6 is an opposite end view thereof. 

The ornamental design for "watch strap", as shown and described. 